It could be said that Heroic Spirits, aside from having become Spectral Bodies, are hardly different from when they were alive, a variant form of eternal life.
The only drawback, it seems, is that the transformation is quite difficult and subsequent upgrades can be somewhat challenging.
The birth of a Heroic Spirit requires the baptism of powerful faith, only those with considerable fame, respect, or fear during their life can potentially be transformed into Heroic Spirits after death.
Even though newly ascended Heroic Spirits possess strength comparable to that of ordinary Superior Specters, they cannot enhance their powers by any conventional means.
Similarly to the method of their birth, if they wish to further increase their strength, they must expand their collection of faith, which means, as in life, doing good or evil deeds to further spread their renown and ultimately gather enough faith to transform from Heroic Spirits into Deities of Faith.
